Murrough O'Brien, 1st Marquess of Thomond

The Most Honourable
The Marquess of Thomond
KP PC (Ire)
The Most Honourable The Marquess of Thomond KP PC (Ire)
	Murrough O'Brien, 1st Marquess of Thomond KP, PC (1726–1808), 5th Earl of Inchiquin (1777–1800), wearing purple coat, white waistcoat, pale blue sash and breast star of the Order of Saint Patrick (Henry Bone)
Member of the House of Lords; as Baron Thomond;
	In office; 2 October 1801 – 10 February 1808
Member of the Parliament of Great Britain;
	In office; 1784–1796 Serving with Charles Dundas (1784-1786); Grey Cooper (1786-1790); Lawrence Dundas (1790-1796);
Preceded by	James, Marquess of Graham
Succeeded by	Charles George Beauclerk
Constituency	Richmond (Yorkshire)
	In office; 1797–1800 Serving with John Eliot
Preceded by	Edward James Eliot
Succeeded by	George Murray
Constituency	Liskeard
Member of the Parliament of Ireland
	In office; 1756–1761 Serving with Sir Edward O'Brien
Preceded by	Robert Hickman
Succeeded by	Francis Pierpoint Burton
Constituency	County Clare
	In office; 1761–1768 Serving with Edward Sandford
Preceded by	Agmondisham Vesey
Succeeded by	Garret FitzGerald
Constituency	Harristown
Personal details
Born	1726
Died	10 February 1808 (Age 81-82)

Preview warning: Page using Template:Infobox officeholder with deprecated parameter "honorific-prefix". Replace with "honorific_prefix".

Preview warning: Page using Template:Infobox officeholder with deprecated parameter "honorific-suffix". Replace with "honorific_suffix".

Murrough O'Brien, 1st Marquess of Thomond KP PC (Ire) (1726 – 10 February 1808), known from 1777 to 1800 as the 5th Earl of Inchiquin, was an Irish peer, soldier, politician, and Chief of Clan O'Brien.